Acts 13:18

for forty years he maintain'd them in the wilderness.

Acts 7:36

he it was, who delivered them by doing prodigies and miracles in the land of Egypt, in the red sea, and in the wilderness for forty years.

Acts 7:39-43

him our fathers would not obey, but rejected him, and they return'd to their Egyptian disposition.

1 Corinthians 10:1-10

I would not have you ignorant, my brethren, that all our fathers were under the Cloud, all passed thro' the sea:

Hebrews 3:7-10

Wherefore as the holy spirit saith, "since to-day you hear his voice,

Hebrews 3:16-19

for some when they had heard his voice, did provoke him: however, not all that were brought out of Egypt by Moses did so.

Treasury of Scripture Knowledge

Summary

And about the time of forty years suffered he their manners in the wilderness.

Bible References

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Acts 7:36
he it was, who delivered them by doing prodigies and miracles in the land of Egypt, in the red sea, and in the wilderness for forty years.
1 Corinthians 10:1
I would not have you ignorant, my brethren, that all our fathers were under the Cloud, all passed thro' the sea:
Hebrews 3:7
Wherefore as the holy spirit saith, "since to-day you hear his voice,